The present invention concerns the use of a furfural derivative of formula (I)
in which R represents (i) a —CH═CR′
1
—COR
1
group, a group
a group
a group
or a —CHO and R′ represents a hydrogen atom or a (C
1
-C
4
)alkyl group, as a chemical vehicle, as a solvent, co-solvent, coalescing agent, crystallization inhibitor, plasticising agent, degreasing agent, etchant, cleaning agent or agent for increasing biological activity, and more particularly as a solvent.
It also concerns phytosanitary formulations or resin-solubilising formulations comprising at least one such furfural derivative of formula (I).
The one-pot aldol condensation/crotonization reaction between furfural and methyl isobutyl ketone (MIBK), followed by hydrogenation with molecular H2, was implemented for preparing tetrahydrofuran derivatives. To this aim, we developed a robust Pd/HPSAPO-5 catalyst based on the crystalline silico-aluminophosphate SAPO-5 with hierarchical porosity and optimized silicon content. The hierarchical HPSAPO-5
进行糠醛和甲基异丁基酮(MIBK)之间的一锅羟醛缩合/巴豆化反应,然后用分子H 2氢化以制备四氢呋喃衍生物。为此,我们基于具有分级孔隙率和优化硅含量的结晶硅铝磷酸盐SAPO-5开发了一种功能强大的Pd / HPSAPO-5催化剂。从预先合成的MCM-41开始,采用自下而上的方法合成了分级的HPSAPO-5催化剂,表面活性剂(CTAB)位于中孔内,既用作Si源,又用作中孔致孔剂。NH 3吸附的探针分子与固态组合的-TPD和FT-IR光谱1使用H MAS NMR评估酸性位点的性质,强度和可及性。使用X射线衍射(XRD)和N 2吸附研究了催化剂的结构和织构性质。HR-TEM用于评估HPSAPO-5上Pd纳米粒子的分散和位置。废催化剂可以在煅烧后恢复并重新使用。
[EN] PROCESS FOR REDUCTIVE AMINATION OF α,β-UNSATURATED CARBONYL COMPOUND<br/>[FR] PROCÉDÉ D'AMINATION RÉDUCTRICE D'UN COMPOSÉ CARBONYLE α,β-INSATURÉ
申请人:RHODIA OPERATIONS
公开号:WO2020034058A1
公开(公告)日:2020-02-20
A process for the reductive amination of an α,β-unsaturated carbonyl compound and a process for the preparation of a tetrathydrofuran-derived amine starting from furfural or a derivative thereof.
The Condensations of Furfural with Acetylacetone and Ethyl Propionylacetate
作者:Hiroshi Midorikawa
DOI:10.1246/bcsj.27.213
日期:1954.4
3-Acetyl-4-(2-furyl)-3-buten-2-one (I) and ethyl α-propionyl-2-furanacrylate (V) were obtained by the condensations of furfural with acetylacetone and ethyl propionylacetate by piperidine, respectively. 3-Acetyl-4-(2-furyl)-3-buten-2-one (I) was oxidised by sodium hypochlorite to furfurylidenemalonic acid (II), and, on refluxing with alcohoric hydrochloric acid and subsequent hydrolysis, gave β-(4
[EN] PROCESS FOR THE REDUCTIVE AMINATION OF A CARBONYL COMPOUND<br/>[FR] PROCÉDÉ D'AMINATION RÉDUCTRICE D'UN COMPOSÉ CARBONYLE
申请人:RHODIA OPERATIONS
公开号:WO2020034062A1
公开(公告)日:2020-02-20
The invention relates to a process for the reductive amination of a carbonyl compound. The invention furthermore relates to a process for the preparation of a furan-derived amine starting from furfural or a derivative thereof.